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feat(MerkleTree): add tweaked Merkle authentication paths with completeness and tweak-tagged collision binding #474

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Merged
quangvdao merged 9 commits into from
Aug 10, 2026
Merged

feat(MerkleTree): add tweaked Merkle authentication paths with completeness and tweak-tagged collision binding #474

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c4fbac2
feat(MerkleTree): add tweaked Merkle authentication paths with comple…
Jul 10, 2026
6e1d312
docs(MerkleTree/Tweaked): rescope as a level-separated same-tweak col…
Jul 12, 2026
296ed8d
feat(MerkleTree): node-addressed Merkle engine — one engine, three trees
Jul 12, 2026
03b7572
feat(MerkleTree): oriented binding for the addressed engine; Tweaked …
Jul 12, 2026
434b90e
chore(MerkleTree): resolve current import and linter failures
dtumad Jul 27, 2026
95ae346
Merge current main into feat/merkle-tweaked-paths
dtumad Jul 27, 2026
f241127
feat(MerkleTree): certify the addressed engine subsumes the unaddress…
Jul 28, 2026
de65b1b
Merge current main into addressed Merkle tree work
dtumad Jul 29, 2026
2c4bf9b
merge(main): sync addressed Merkle tree
quangvdao Aug 9, 2026
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9 changes: 9 additions & 0 deletions ToMathlib/Data/IndexedBinaryTree/Basic.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,7 @@ inductive SkeletonInternalIndex : Skeleton → Type
SkeletonInternalIndex (Skeleton.internal left right)
| ofRight {left right : Skeleton} (idxRight : SkeletonInternalIndex right) :
SkeletonInternalIndex (Skeleton.internal left right)
deriving DecidableEq

/-- Type of indices of any node of a skeleton -/
inductive SkeletonNodeIndex : Skeleton → Type
Expand Down Expand Up @@ -583,6 +584,14 @@ def SkeletonInternalIndex.depth {s : Skeleton} : SkeletonInternalIndex s → Nat
| SkeletonInternalIndex.ofLeft idxLeft => idxLeft.depth + 1
| SkeletonInternalIndex.ofRight idxRight => idxRight.depth + 1

/-- The height of the subtree rooted at an internal-node index. -/
@[simp]
def SkeletonInternalIndex.subtreeDepth :
{s : Skeleton} → SkeletonInternalIndex s → Nat
| .internal left right, .ofInternal => (Skeleton.internal left right).depth
| _, .ofLeft idxLeft => idxLeft.subtreeDepth
| _, .ofRight idxRight => idxRight.subtreeDepth

/-- Depth of a SkeletonNodeIndex -/
def SkeletonNodeIndex.depth {s : Skeleton} : SkeletonNodeIndex s → Nat
| SkeletonNodeIndex.ofLeaf => 0
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2 changes: 2 additions & 0 deletions VCVio.lean
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Expand Up @@ -52,6 +52,8 @@ public import VCVio.CryptoFoundations.KEMDEM
public import VCVio.CryptoFoundations.KeyEncapMech
public import VCVio.CryptoFoundations.MacAlg
public import VCVio.CryptoFoundations.MacFromPRF
public import VCVio.CryptoFoundations.MerkleTree.Addressed.Basic
public import VCVio.CryptoFoundations.MerkleTree.Addressed.Level
public import VCVio.CryptoFoundations.MerkleTree.Inductive.Batch.Completeness
public import VCVio.CryptoFoundations.MerkleTree.Inductive.Batch.Defs
public import VCVio.CryptoFoundations.MerkleTree.Inductive.Batch.ToSingle
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